We perceive several problems related to the functions in many situations in life and develop solutions accordingly. The function shows the effect of one (or more) variable(s) on another variable. In simple terms, one factor can be called the transformation of another factor. When you send a piece of mail by cargo, you pay according to the weight of your cargo. Or imagine using an hourly Internet service in a library or airplane; the more hours you use the Internet, the more you pay.

A group of people want to rent a bus. The number of people does not affect the cost of rent for a bus. However, the cost per person could change depending on of the number of people. The more passengers, the less fee they pay for each passenger. Conversely, if the number of passengers is less, the cost of the bus fee could be more.

The examples are given above help to understand the mathematical function more easily. We perceive several problems related to the functions in many situations in life and develop solutions accordingly. The function shows the effect of one (or more) variable(s) on another variable. In simple terms, one factor can be called the transformation of another factor.

Consider shipping by mail. There are actually two situations here; the weight of the cargo sent and the amount of money paid based upon the cargo’s weight. This gives us a hint for the payable amount. For example, we may know how many pounds of cargo can be sent for $10. We also may calculate how much money is needed to ship 5 pounds of cargo. We can formulate this shipping problem:  Let x be the weight of the cargo and let y be the amount to be paid. In addition, for each parcel sent, including taxes, let us assume that it costs $3. In this case, we get an equation such as y = 2x + 3. Here, the number 2 given in front of the variable x is the money paid per pound. We calculate how many dollars we will pay for a 4-pound cargo: (2×4) + 3 = $11. If 2 dollars per pound is received, a 4-pound package shipping fee is 11 dollars.

Another example would be the use of the Internet. If 40 cents is requested per hour, $1.2 will be given for 3 hours of internet usage. Thus, the equation can be written as y=40x, where x is internet usage time per hour, y is amount to be paid.

The bus rental example is slightly different from the above two examples. Although this example specifies the function, this time there is a reverse situation. In the first two examples, like (x or) input increases, (y or) output will increase. In the case of bus rental, the bus rental fee is fixed and as the number of passengers increases, the payment per person will decrease. Let’s say $400 is required for the daily rental of a bus. 40 people pay $10 per person while 8 people pay $50 per each person.  This equation would be; y=400/x, where x is the number of people, y is the amount of money paid per person. Functions are important in understanding the relationship between two variables.

Life is a function. In mathematics first, what is the function in its simplest form? Let us give the known definition in schools.

Function: Let A and B be two sets different from the empty set and there is a relation f from set A to set B. If the relation f associates each element of the set A to one and only one element of the set B, this relation is called the function from set A to set B. It is shown as f: A→B or A→B. A is called the definition set of the function and B is called the set of values. A set of elements that match the elements of set A in set B is called the set of images of the function and is denoted by f (A).

In this case, if we clarify the definition a little, a relationship from A to B to be defined in order to function f; the following conditions must be met:

1. There should be no elements in the definition set that do not have an image. However, the element can remain exposed in the value set.
2. Each element in the definition set must not have more than one image.

Let us try to find the reflections of the definition in our lives. We assume that A is the world in which we live. If we say “World” for Set A (Definition Set), we would call Group B “the Afterlife” (Value Set). Because there is a connection from this world to the other world. We will see our values in the afterlife against what we do in this world. As someone who fits the definition of a “good” person will be of high value, the definition of a “bad” person will consequently result in a lower value. So, set A considers the world and its elements as ‘living people’. We can think of all the people in the world and include them in this group since life is finite for all of us. The mathematical meaning of this reality is the following:  all elements will be moved from set A to set B (Let A and B be two sets different from an empty set and a relation f from set A to set B.). There is such a connection (or relation) that one who leaves the world cannot go to two places at the same time. Destinations are clear: abode of reward or abode of punishment. We will all be eventually placed into one of these two groups. In some cases, the last stop of the people will be paradise, even if there are those who go to hell first and purify their sins. Consequently, in the last case, no one will be in two places at the same time (If the relation f associates each element of the set A to one and only one of the set B, this relation is called the function from the set A to the set B).

Just because everyone has one final destination does not mean that that destination can only hold one person. If the levels of Heaven and Hell are considered correctly, it is possible that there is more than one person for each level or that no one has come to that level. It is possible that there are those who have sinners at the same level. We can speculate that there may even be such a level that is inaccessible to all people. The Creator creates such places in order to show His grace, mercy, and power. (In the definition set, there should not be any elements without an image. But in the value set, there may be exposed elements.)

Life itself is a function. God created life according to certain rules. We should do our best to explore, find, and use these rules. Seeing the beauties of life and being amazed by the astonishment and capturing happiness in both worlds is achieved by seeing the manifestations of God everywhere.

I have recently been very intrigued about moods, specifically how our moods biologically change. The processes behind why we get happy, sad, or angry are integral to our existence, and having some insight into how exactly they come about could help us grow immensely. 

In my search for answers, I discovered Dr. Masaru Emoto (d. 2014), a Japanese scientist that had dedicated his life to studying water. Dr. Emoto’s studies claim that thoughts, feelings, words, ideas, music, and even names affect the molecular structure of water and thus our physical reality. During his study, Dr. Emoto discovered that water droplets that had been repeatedly exposed to positive or negative words, profoundly changed the water’s color, shape, and symmetry.

His first experiment involved putting distilled water into small jars, writing a word or short phrase on a label, and then taping that label to each jar. The jars were then left overnight on their own. Some of these words had positive associations such as “self-love,” “beauty,” “passion,” and “happiness.” Other jars had negative associations such as “evil,” “hatred,” or phrases such as “you disgust me.” Each jar then had a small amount of water flash frozen in order to form crystals, which were then observed under a microscope. The results were astonishing; the positive words formed beautiful, symmetrical crystals that looked very similar to snowflakes while the negative words were discolored, chaotic, and fragmented.

His revolutionary findings were published in his book, The Hidden Message in Water. However, Dr. Emoto’s work was met with criticism, skepticism, and confusion. Other commentators were concerned that Dr. Emoto did not do enough to share his approaches or provide sufficient evidence for his experiments.

He decided to take the experiments a step further and wanted to see what would happen to a large amount of water over an extended period of time. His famous “Rice Experiment” involved putting the same amount of rice in three different jars and then adding the same amount of distilled water into the jars. He then closed the jars and labeled each jar with a different word. On the first jar, he labeled it with the phrase “Thank You”; the second jar with the phrase “You are an idiot”; and the third jar was left with a blank label. Every day, for 30 days, he visited each jar and read aloud their corresponding label to the jar for one minute and tracked the changes in each jar over the month. By the end of the month, he had noticed that the water in the jar labeled “Thank you” had started to ferment, giving off a strong, pleasant aroma. The water in the jar that was labeled “You are an idiot” turned black with an unpleasant shape. The most interesting result, in my opinion, was the last jar with the blank label that had been ignored the entire time. It turned into a nasty green-blue color as opposed to staying near its original color. His results were consistent with his previous experiments with smaller jars, and it appeared that there was a trend. I was astounded by these discoveries and could hardly believe it, so I decided to try it for myself. My daughter and I did the same experiment as a part of her science fair project. To our amazement, we got very similar results within just 19 days. This experiment was a great lesson regarding the impact that our words have on others for my children beyond being just a science fair project. 

Dr. Emoto concluded his findings by stating that water is a “blueprint for our reality” and that emotional “energies” and “vibrations” could change the physical structure of water. It is imperative to remember that water is life; about 70% of the human body, and almost two thirds of the world, is made up of water. Therefore, everything happening around us, our thoughts, our attitudes, our behaviors, and our intentions are related to each other and can affect our emotions. Scientists still need to figure out how exactly these changes in water may affect our bodies and our world, but the results are clear for all to see.

This puts more responsibility on our shoulders to be responsible human beings. We should always think, speak, and act positively if we also want our surrounding environments to be positive.

There is also a great lesson in this study for teachers and educators. We teachers come across a variety of students at various ages all throughout the school year. Our interactions with them can have a very real impact on their lives, minds, and futures for better or worse. Every year we are given around 25 jars of rice with water, to represent 25 students, in each class with no label on them. We meet with them at the beginning of the year with no bias towards any of them. They are each a perfectly clean slate in our eyes, a new jar of distilled water and rice waiting to either ferment or rot. We then, consciously or subconsciously, label them in our minds and hearts; the students labeled “jar 1” receive praise and compliments; some students are labeled “jar 2” and are told that they will fail or are troublemakers; while the last group is labeled “jar 3” and is largely ignored due to their own shyness and/or our indifference. If you are a teacher or interact with children on a consistent basis, it is more than likely you already had hundreds or thousands of jars by now and now you can ask yourself that how many of them finished the year in better shape than the beginning of the year. How many of them were labeled as “jar 1”,”jar 2” or “jar 3”? When I close my eyes and think about all the years I taught, I am not sure if I was able to treat all the jars with positive attitude.

I believe everyone had an experience about how our tone of talk or our answers changed the heat of the discussion. As stated in the Bible, “a soft answer turneth away wrath: but grievous words stir up anger” (Proverbs 15:1). Sometimes a simple small word could change your life completely in a positive way or a negative way. Our modes, attitudes and the language we use, impact the people around us and most of the time we are not fully aware of its extent.

Both positive and negative thinking or thoughts are contagious. When we see cheerful friends around us, we feel our days a bit brighter, or we feel down when we talk to grumpy people. Positive attitudes, positive thinking and positive thoughts do change our lives. Bediuzzaman Said Nursi put it well: “A person who sees the good in things develop good thoughts. And he who has good thoughts receives pleasure from life.” People who can develop positive thinking will more likely have a healthy, happy, and successful life, and they can overcome struggles more easily. If you want to have a healthy, good looking, warm environment that is productive and gives a pleasant time, you need to use positive, encouraging and soft language to make it happen. It is in our hands to improve our world with love and gratitude.

Positive thoughts lead to good feelings, good deeds, and diminish negativity, make our hearts delighted. Whereas negative thoughts generate bad feelings, hatred, jealousy, anger, depression, stress, and negative emotions which cloud our soul and lead to an unhealthy life. To be able to stay healthy emotionally and psychologically we have to immediately turn ourselves to positive thinking when we feel we are surrounded with negativities. The Prophet Muhammad, the Messenger of God (peace be upon him) said “Follow a bad deed with a good deed and it will erase it.” We may not have full control initially over the types of thoughts that cross our minds every moment, however we have the ability to ignore or pursue them as prescribed by the Prophet, peace be upon him: “Whoever believes in God and the Last Day, let him speak good or remain silent.”

References

● https://www.masaru-emoto.net

● Beyond Words Publishing www.beyondword.com.

● https://hado.com/ihm/water-crystals/

● Source: Sunan al-Tirmidhī 1987, Grade: Sahih

● Source: Ṣaḥīḥ al-Bukhārī 6110, Grade: Muttafaqun Alayhi

● https://www.csicop.org/specialarticles/show/a_grain_of_truth_recreating_dr._emotos_rice_experiment

● Gray, Donna (July 26, 2003). “Message in the water.”Calgary Herald. p. S8. Retrieved 2019-04-21 – via ProQuest..

“There was a footpath leading across the fields to New Southgate, and I used to go there alone to watch the sunset and contemplate suicide. I did not, however, commit suicide, because I wished to know more about mathematics.”
-Bertrand Russell, Nobel Laureate and Mathematician

It is mystical when you step outside on a snowy morning. Snowflakes are swirling around the vast sky and falling and blanketing the ground. If a snowflake lands on you, it is like a winter angel. There are no flowers around, for they cannot survive the cold; yet what lies before your eyes is an incredible beauty. And it’s remarkable, you come to realize, that no two snowflakes are alike. It is as if the uniqueness of a snowflake is controlled by a divine force. The individuality of a snowflake’s structure draws a parallel to human life. Like snowflakes, everyone has a unique story to tell.

I am not the only one who ponders about snowflakes; many mathematicians do the same. Actually, they think about the characteristics of snowflakes because they are particularly important for three basic mathematical principles: pattern, symmetry, and symmetry breaking.

A little-known scientist, Wilson Bentley, a.k.a. “the Snowflake Man” took pictures of snowflakes almost every day and observed them until he died. You can buy his book about his work on Amazon. If you wish to know why he did it, read about it at snowflakebentley.com.

“Under the microscope, I found that snowflakes were miracles of nature; and it seemed a shame that this beauty should not be seen and appreciated by others. Every crystal was a masterpiece of design and no one design was ever repeated. When a snowflake melted, that design was forever lost. That beauty was gone, without leaving any record behind.”
-Wilson Bentley

When I checked the Oxford dictionary, there were 3 definitions for the word “pattern.” Two of these definitions [listed below] are important for this article.

Pattern: 1. A repeated decorative design; 2. An example for others to follow.

When we check the pictures and delve deeper into each snowflake, we will see that the structures of the snowflakes are totally different. However, they have something in common: symmetry and a hexagonal structure.

These perfect ice crystals are genuine, even though it is hard to believe they are not fake.

When I take a close look at a snowflake, the beauty of the combination of ice molecules fascinates me every time; each flake is unique. However, uniqueness is not the point here. The things that make snowflakes important objects for mathematicians are their symmetry and their hexagonal structure. Math-loving people have a lot of interest in transformations. They love moving objects. And, surprisingly, if an object is symmetric, transformations are not even noticed by many.

To be more precise, when you have a hexagonal symmetric snowflake, or any other symmetrical object, when you rotate it in any direction, 60°, 120°, 180°, 240°, 300°, or 360°, people watching you wouldn’t realize it. If you check the images below, you will see rotated shapes but no difference. It appears to be the same shape in exactly the same place.

1- Counterclockwise rotation by 120°

2- Reflection through a vertical axis

3- Reflection axes of a snowflake[1]

Snowflakes also possess reflectional symmetry. If we stand in front of a mirror, our reflection looks exactly the same. Hence, if we put a mirror in the middle of a snowflake, there will be a reflection. For a snowflake, we can put a mirror 6 different ways. Thus, we can say that a snowflake has 12 symmetries: 6 from reflections, and 6 from rotations.[2]

Now we can define symmetry as a transformation that leaves things unchanged. We can also claim that a combination of any of the transformations will give us exactly the same shape. For instance, we can rotate our snowflake 60° two or three times in a row and flip it over, and it will remain unchanged.

At this point, you might ask the question: “You have all these fancy symmetries for this particular snowflake. But, does every snowflake possess the same symmetries?”

Snow is a molecular structure of an ice crystal. And ice is a structured substance. It is a different form of water. When the water cools down, the molecules move more slowly, and this begins to impact how the molecules line up. Hydrogen atoms of one water molecule bond with two oxygen atoms. As the water freezes, the molecules arrange into hexagonal patterns. They prefer to stay as far away from each other as possible, and that makes them take up more space. The large space affects density. The density of ice becomes less dense than water. This is why ice floats. Almost all other liquids have a higher density when they freeze.

When we examine an ice crystal carefully under normal conditions, we always see a combination of molecules with six-fold symmetry. Snowflake molecules make a honeycomb structure. This results in an inordinate amount of hexagonal symmetry in these molecular three-dimensional structures.

Okay, we saw the structure of a snowflake under normal conditions. But, what if we changed those conditions? Johannes Kepler answered this question after his experiments and wrote a book about snowflakes, particularly The Six-Cornered Snowflake.

There are two key elements which affect the structure of a snowflake: temperature and moisture. Each time the temperature or the amount of moisture change, the structure of a snowflake changes. If you check the snow crystal morphology diagram below, you will see that when the temperature nears 0° and humidity is high, the structure of a snowflake will be flowery. Flowery structures are called dendrites. When you make it a little bit colder, the structure will be fancy hexagonal plates. We can apply many combinations and get varying structures.

The Snow Crystal Morphology Diagram. Source: Snow Crystals – http://www.snowcrystals.com/science/science.html

Professor of physics Kenneth G. Libbrecht is the owner of the diagram below. In a PBS interview, he said, “It’s a mystery as to why snowflake shapes go from plates to columns to plates to columns as the temperature lowers. That’s one of the things I’ve been trying to understand. It has been a mystery for about 75 years, and it’s still unsolved.”[3]

The Shapes of Snowflakes | Source

In the end, although the structure of (almost) all snowflakes are the same, some of them are not completely hexagonal. For instance, there are some snowflakes that have tree structures. Some snowflakes have branches, and each branch has tiny branches.

But, why is the structure of some snowflakes not hexagonal?

So far, we have talked about pictures which were taken at a particular instant. We have seen the pictures of the motion of the snowflakes for the smallest amount of time that can be measured. However, a snowflake never stops spinning in the air. They tend to oscillate. That means the shape of the snowflake is changing all the time. But how? When you see a snowflake in the air, it changes its place after a second because it would be whirled about, and it will be under different conditions at that time. This process will occur up until the snowflake lands on the ground. We know from the diagram that the temperature and amount of moisture always affect the shape of a snowflake. While small-scale conditions are almost the same, on a larger-time scale, conditions will differ. And these differences will change every corner of a hexagonal snowflake, resulting in a different structure. This is the main reason behind the variety of snowflake structures and uniqueness.

In conclusion, we can say that a snowflake can preserve its six-fold symmetry at all times. I think we have another reason to love mathematics! I want to finish my piece with Hermann Hankel’s words:

“In most sciences one generation tears down what another has built, and what one has established another undoes. In mathematics alone, each generation adds a new story to the old structure.”

How can we then speak of absolute justice when there are so many innocents oppressed, murdered, and their rights confiscated at the hands of tyrants? “Is God just” Dr. Horkuc asks in this issue when He creates people in their respective particular places and under particular conditions and expect the same scores from both? Horkuc writes in this issue that the cup analogy of Bediuzzaman offers a solution to this dilemma.

Occupied with extreme work load, a great majority of us in modern times are bent double and exhausted in most cases to the point of total collapse. Is it only the amount of unnecessary work load or that we do not know how to deal with the present conditions that underlies this exhaustion? Ihsan Kose argues for a “minimum work principle” in the universe. From gravity to routes ants pursue on their tracks, to electrical circuit boards, the path light moves and all phenomena in the universe apparently manifest themselves with one common thing: lowest energy consumption. The article is prescriptive in the sense that whatever we may be busy with, we can and we should find the most efficient formula for best outcome in return for minimum amount of energy, so that we can make best of our stamina reserves.

Computer games are approached with suspicion, yet the number of people engaging with games and the amount of hours and even days we spend for them are increasing. “Gamification,” however, Ahmet Tugra argues, has become a trendy word. “It aims at transforming real life context in a manner that adopts game thinking in online platforms. From this perspective, it proposes to increase motivation, engagement, sense of enjoyment, and the positive attitudes of people towards work.” Games enhance cognitive development in children, and a balanced adaptation of games into real life contexts may help us generate more convenient work and family environment for adults.

Among tropical fruits, bananas are probably the most popular, and with good reason. They are delicious and nutritious, and can be consumed by everyone, from babies to seniors.

The banana plant belongs to the Musa genus. The varieties preferred for cultivation are two hybrid species, Musa accuminata and Musa balbisiana. These types are mostly produced in Southeast Asia, Africa, and South and North America.

There are many varieties of banana. Short Cavendish, mid-sized Grand Nines, and longer Chiquita are some of those. The main harvesting occurs in September and October, but bananas can be produced year round in greenhouses.

Bananas are not reproduced by seeds. They reproduce through tissue culture – pieces of tubers or underground shoots. Underground perennial tubers spread horizontally and grow roots. Once the leaves and sheaths inside the annual aerial pseudostem reach a certain number, a flower bud is developed. The flower stalk, rising among the leaf bundles that are in the center of the pseudostem, carries the purple colored flowers that will become fruit.

When these flowers bloom, sounds can be heard. These sounds occur during the tearing of stem when the flowers force away from the crust to form the banana clusters; this is also known as inflorescence. While the buds are quickly developing, the purple leaves open and flowers become visible. Once the flower inflorescence emerges completely, it bends towards the ground. Fruits then form. Since the banana is a parthenocarpic plant, its fruit is generated without pollination from female flowers, like seedless grapes. The approximate time required for flowers to give fruit and become ripe is three months (1).    

Bananas are rich in nutrients. There is 1.1 gr. of protein, only 0.2 gr. of fat, 22 gr. of carbohydrates (fructose, glucose, sucrose and starch, cellulose, pectin), along with minerals like potassium, calcium, iron, phosphate, copper, zinc, and magnesium in 100 grams of a banana. It also contains fruit acids, along with vitamins A, B1, B2, B6, B9, C, D, E and P vitamins. Before bananas ripen, when they are still green, they contain approximately 1% sugar and 20% starch. As they ripen, the sugar content rises to 20% and the starch level drops to 1%.  

Bananas are harvested green and unripe and are matured in a closed environment. Unripe bananas can be stored for up to 15 days at 5-10 degree Celsius and 80-90% relative humidity. Maturation is enabled via ethylene gas, in storage rooms or during shipment. The shell becomes completely yellow, with brown spots, when the banana ripens. These spots indicate the sufficient conversion of starches into sugars. It is recommended to consume the ripe fruit as soon as possible.

In the past, the transportation of mature fruits to remote regions was a major problem, but this is not the case today. It is because methylcyclopropene (MCP) is used to delay the ripening of the fruit. When MCP is used, it binds to ethylene receptors, and slows down maturation (2). The proper storage temperature is 13-15 degrees (Celsius), so they get darker in the fridge faster. Therefore, it is advised to store them in a suitable place in a paper bag (3).

Even though they are usually eaten raw, as a fruit, some banana types are consumed after cooking. They can also be utilized as chips, baby food, puree, flour, or juice. In some places, banana flowers are used in salads and as decoration. Furthermore, bananas are employed in facial and skin care products. The leaves and stalks of the banana plant may also be used in the construction of roofs, and the fibers can be used as ropes, upholsteries, or even hats.  

According to the statistics of the Food and Agriculture Organization of the United Nations (FAO), the annual production was 55-60 million tons in 1995, whereas it is 90-100 million tons today. 25% of the production occurs in India, and the majority of the rest takes place in the Philippines, China, Brazil, and Ecuador. Even though they are grown in various parts of the world and traded widely, bananas are mostly imported by developed countries.

Benefits of the banana

Bananas can help prevent many diseases or provide complementary aid to different therapies. When a banana is blended with milk, it can serve as an ideal starter food for babies, and can also reduce wear and tear on the body, delaying aging.

Bananas have been shown to help after stomach or intestinal bleeding, and in patients with ulcers or various laryngeal problems. They can help prevent acid reflux. The sodium and potassium contained in bananas are effective for restoring heart beat rhythms and the body’s osmotic balance. Since bananas are rich in iron, they’re beneficial for anemia. Due to a high amount of serotonin, bananas can actually make people happier, improving our decision making and concentration. Because they can actually make us less depressed, bananas are a recommended snack (5).

Bananas help support the development of children’s skeletal structures, and can ease the pain of menstrual cramps. Aside from being an energy source, bananas help the nervous system function properly, maintaining the acid-base balance of bodily fluids and strengthening the immune system. Because of high magnesium and potassium, they help us sleep better – thus making a banana the perfect midnight snack!

Carbohydrates can cause instant blood sugar spikes, but they are also the most important energy source of the brain, central nervous system, and muscles. When blood sugar rises, it is stored as sugar or fat with the help of insulin secreted by the pancreas. This can cause obesity, or even diabetes, if a person ingests too many carbohydrates. Therefore, one must consume high sugar foods like bananas at the right time, and in the right amount.

Beta-carotene, one of the precursors of vitamin A, happens to be abundant in bananas. Beta-carotene helps with the neutralization of free radicals, supports the immune system, prevents cardio-vascular disease, and is protective against cancer. It’s more beneficial when taken together with vitamin E and C, which are also found in bananas.

The good news keeps coming! Due to a high amount of fiber, bananas are great for dieting and can also prevent colon and bowel cancers. Bananas can also help to regulate bowel functions.

Genetically modified banana plants are also employed for the synthesis of vaccine proteins used against Hepatitis, rabies, dysentery, cholera and other intestinal infections (7).

As you can see, the banana has been imbued with an extraordinary amount of positive properties. It’s not difficult to look at bananas as an amazing blessing bestowed upon humanity.

We tend to overlook our skin, but it performs many vital functions for our bodies – including coming to our rescue in emergencies.

Since it is designed to function within very precise limits, our body is very susceptible to small temperature changes. Since abnormalities in these changes occur, the body has various mechanisms to keep its temperature constant. One of these mechanisms works by changing the amount of blood in the veins underneath the skin. When talking about body temperature, it is important to distinguish between the internal and external body temperature. The internal temperature is the temperature of the brain and internal organs, while the external body temperature is the temperature of the skin.

Normally, arteries that transport clean blood, and veins that carry dirty blood, are not connected; therefore clean and dirty blood never mix. However, as a consequence of some illnesses or birth defects, an abnormal bridge between arteries and veins may be present. This kind of condition is usually called arteriovenous shunts, or arteriovenous fistula. In these kinds of situations, blood is pumped directly from arteries to veins. In other words, clean blood flows towards dirty blood. Normally, the clean blood has to travel the body, providing oxygen and other supplements to cells, while collecting carbon dioxide and returning to the heart to be cleaned again.

An incredible network for the transportation of substances from the blood in arteries and veins has been created. If this system, known as the “capillary network,” did not exist, none of our organs could be fed, and the circulatory system would not be able to provide its vital function.

The system is necessary for two reasons. The speed of the blood in the arteries and veins is too fast for anything to be transported to the organs, and their walls are too thick to allow transportation of substances. Therefore, the blood travels from the arteries to the capillaries, and after the trading of oxygen and other substances with carbon dioxide is completed, it flows to the veins. If any kind of abnormalities exist, the blood flows directly from the arteries to the veins, therefore skipping the capillaries. As a consequence, the organs aren’t fed and the blood gathers in the veins without fulfilling its purpose. Naturally, the oxygen and nutrition balance of the organs gets messed up. The blood is pumped out of the heart with no purpose and heart failure becomes inevitable.

The capillary network has been assigned the task of communication between arteries and veins. The skins is our only organ where the blood flows directly from arteries to veins; AV shunts accomplish a very important duty in this function.

There is a network of veins underneath the skin. The number of veins in this network is so many that if they were completely filled up, they could hold up to two liters of blood in the skin. Blood is pumped to the skin for two purposes: to provide oxygen and nutrients to the cells, and to collect carbon dioxide and waste products in the cells, as is done with every organ; and to monitor the internal temperature of the body by sending blood to the skin if the temperature gets too high, similar to what radiators in cars do when the engine gets too hot.

There is also the subcutaneous fat tissue underneath the skin which acts as an insulator. The vein network mentioned above is inside this fat tissue. There is a continuous flow of blood from the capillaries that feed the skin towards this network of veins. Moreover, especially in areas where the skin is exposed – such as the hands, feet, face and ears – there is a blood flow from the small arteries towards this network of veins. Contrary to other organs in the body, blood flows directly from the arteries to the veins. If this direct blood flow did not exist, the amount of blood in the skin’s veins would be close to zero, because the amount of blood necessary for skin nutrition is very little. However when the internal temperature rises too much, the amount of blood, which is normally close to zero, can suddenly increase to as much as 30% of the blood pumped by the heart. In this case, the body’s internal temperature is being transported to the skin. This is an incredibly efficient cooling system. However, if the weather is cold, the AV shunt veins are switched off and the skin’s blood flow is decreased until close to zero, therefore maintaining internal temperature. The fat tissue underneath the skin also has a very important function, as it acts as insulation, helping maintain temperature.

Body temperature and the body’s systems work in perfect coordination with each other. We can observe a very simplified version of this system in computer based air conditioners. However, when we reflect upon the incredibly sophisticated cooling system of the human body, we come to the conclusion that no other system is as perfect as that.

The hypothalamus, which has various vital duties for the brain, was also given the very important mission of controlling the body’s temperature. There are hot and cold heat receptors in various parts of the hypothalamus. When body temperature increases, these receptors are activated. As a consequence of this warning, skin veins all over the body expand. Simultaneous with the expansion of the veins, sweat is excreted.

The hypothalamus also has the duty of suppressing the mechanisms that produce heat throughout the body. For example, trembling is stopped and general metabolism is slowed down to decrease body temperature. As metabolism slows down, the production of heat becomes minimal, and cooling takes place. In conditions where the body temperature is too cold, some hormones secreted in the hypothalamus trigger the pituitary, and then the thyroid, hormones. Since thyroid hormones are responsible for increasing metabolism, body temperature increases. However if body temperature increases above normal, the control of the hypothalamus on the thyroid is reversed, and thyroid hormones are decreased, therefore decreasing body temperature.

There is one more reason for placing so many veins in the perfect and miraculous body’s skin: except for extremely cold weather conditions, quite a large amount of blood exists in these veins that are not used for nutritional purposes. Some of our organs act as storage for blood; two of the most important ones are the spleen and liver. Another one is the skin. In the course of losing blood, or an illness that increases the need for blood, the spleen and liver shrink. As a consequence of this shrinkage, the blood inside them is sent to the heart, through veins, and distributed to the areas in need of blood. This increases the heart rate.

A similar scenario occurs in the skin. The veins responsible for cooling shrink, and the blood they contain is sent to the heart with the help of the main veins, therefore helping the heart pump. During heavy loss of blood, the blood in the skin comes to the rescue. Patients who are losing blood have incredibly cold and pale skin. This is because the blood in the skin has reduced to a minimum.

The obverse of this happens in an illness called erythromelalgia, where more blood than normal flows from the arteries to the veins in the skin. This is mostly seen in the hands, feet, nose, and ears, since AV shunts are more prevalent in these areas of the skin. The symptom of this illness is burning pain, which is triggered by heat and soothed by cool temperatures. The nutrition of the skin decreases and some substances produced because of the absence of oxygen increases redness, heat, and pain, since some of the capillaries feeding the skin shut down and all of the blood flows from arteries to veins with the AV shunts.

Our skin protects our muscles and bones, and contributes to the beautiful aesthetic of our body. It provides our sense of touch, and is therefore a means for us to experience the material world, as well as providing temperature control for our bodies. It can clearly be seen that the relationship between the skin and the veins could not have evolved by the consequence of coincidence.

The existence of antimatter was suggested in 1928 by Paul Dirac and was confirmed experimentally in 1932 by Carl D. Anderson. They state that every elementary particle (matter) has its own anti-particle (antimatter): electrons have anti-electrons (positrons) and protons have anti-protons and so on. Antimatters have the same mass as matter, but they carry an opposite electrical charge [1]. For that reason, if matter and antimatter collide they cancel each other out, resulting in annihilation. This collision produces a tremendous amount of energy. For instance, a collision of 1 kg of matter and antimatter releases the energy equivalent to the explosion of 43 megatons of TNT [2].

However, producing antimatter is not an easy process and requires very energetic collisions in giant accelerators such as CERN, located near Switzerland, and Fermilab, located near Chicago, US. The annual amount produced in these laboratories is 1^-10 nanograms. The typical process is to accelerate protons to almost the speed of light, and then send them into a metal target, which is usually tungsten. Because of the collision, the protons are slowed or stopped by the nuclei of the tungsten atoms. The protons’ kinetic energy is converted into matter that contains subatomic particles, and some of these particles are antiprotons [3].

To avoid annihilation, antimatter must be separated from other subatomic particles. One way to do that is to use the Penning trap in which charged particles of antimatter are confined radially by homogenous magnetic fields and axially by quadropole electric fields. Penn State and NASA scientists have already built such a device capable of holding 10 million antiprotons for a week. Now they are developing a Penning trap with a capacity 100 times greater [3].

Figure 1: Schematic of Penning Trap: Electric fields are blue, Magnetic fields are red, a: end cap, b: ring electrode, c; magnets (www.en.wikipedia.org)

Many of us remember the antimatter engine from the Star Trek series. Interplanetary travel has been humankind’s dream for centuries. Now, scientists are designing a spacecraft propulsion system that will work by expelling the products from the annihilation of protons and antiprotons. Such a propulsion system requires antimatter the size of an aspirin (10 grams) for hundreds of light years of travel. However, this amount of antimatter is not available yet, and with current technologies, it would cost around 100 trillion dollars to produce 1 milligram of antimatter.

One of the discoveries made by scientist at Penn State was that a space propulsion system would need only a small fraction of the antimatter consumed by a beamed core engine. It would work with an antiproton induced micro-fission (ACMF). In this process, Deuterium-Tritium (D-T) pellet and Uranium-238 (U-238) are compressed with a proton beam [1 in Figure 2]. After two nanoseconds, the pellet is subject to antiproton beams [2 in Figure 2]. Uranium U-238 absorbs the antiprotons and the result is a hyper neutronic fission that transfers the heat energy from the uranium core to D-T pellet and ignites it [3 in Figure 2]. Propellant inside the pellet is expanded to produce a pulsed thrust [4 in Figure 2].

Figure 2: Illustration of ACMF reaction chain, in four steps (www.ffden-2.phys.uaf.edu)

Another concept is called Antimatter-initiated micro-fusion (AIM), which was also designed by Penn State scientists. In this mechanism, electromagnetic fields continuously compress a small concentration of antiproton plasma [1 in Figure 3] Than the Deuterium-Tritium droplet injected into the plasma [2 in Figure 3]. Also a small amount of U-238 is allowed to annihilate with the antiprotons, which fully ionizes and heats the plasma. The resulting product is expelled out of a magnetic nozzle to produce thrust [3 in Figure 3]. Finally potential well is relaxed to its original state [4 in Figure 3]

Figure 3: Illustration of AIM reaction chain, in four steps (www.ffden-2.phys.uaf.edu)

Scientists also believe that antimatter has the potential to be applied in medical sciences and one of them is fighting cancer. Currently, scientists at CERN are investigating the antiproton beam therapy as an alternative treatment. Experiments have compared the damage of proton and antiproton beams on hamster cells. The results show that the damage inflicted by antiprotons to cells at the end of the beam path was four times greater than that of proton beams. This means that one antiproton is enough to achieve the same damage as four protons, and moreover, antiprotons have unsurpassed ability to preserve healthy tissue [4].

Image of antimatter cell interaction experiment (www.rsc.com)

It seems that producing large quantities of antimatter is difficult and expensive today, but as long as we are on the right track with the right developments, one day, it could become a reality. If a significant amount of antimatter can be produced and controlled, this could help us obtain more information about nature, and it might become one of the world’s primary energy sources. It can also bring innovative solutions with medical benefits such as cancer therapy. Last but not least, antimatter also offers implications of existence beyond what we can see, thus an infinitely vast area of research to conduct via not only with our minds but also with our hearts.

Mehmet Fatih Yýlmaz is Assistant Professor at the engineering faculty of Mevlana University, Konya, Turkey.

Note: Author would like to thank Margaret Johnson for her useful comments on this article.

References

1. Dirac, Paul. 1928. “The Quantum Theory of the Electron,” from Proceedings of the Royal Society of London: Series A 117 (778): 610–624.

2. www.wikipedia.com

3. www.engr.psu.edu/antimatter

4. www.press.web.cern.ch

We vessels can be divided into three main groups in terms of structure and function. The ones with thicker walls, which bring every organ the blood they need from the heart, are the arteries. The pressure inside us is higher and we easily carry blood to the organs. The ones with thinner walls, lower pressure, and larger inner space are called veins. As a matter of fact, both arteries and veins have a three-layered structure that is very suitable for holding a fluid like blood. Since our walls are strengthened with both connective tissue and smooth muscle layers, we bear the pressure coming from the heart and help blood proceed by contracting and relaxing. Since arteries are directly subjected to the strong pressure from the heart, our walls were created in a thicker and stronger form. Since the veins return blood to the heart and thus have lower pressure, we have valves that close after blood passes, so it does not flow backward due to gravity. This is a serious challenge for the blood passing through your legs. Varicose veins might develop due to weight gain from pregnancy or obesity, which increases pressure on the legs, or to hours of standing, walking, or running on hard surfaces.

Capillaries are the most delicate blood vessels, with walls made of a single layer of epithelium, which enables us to exchange substances between blood and tissues. As blood vessels, our total length is about 120,000 kilometers. Try to imagine if a fisherman’s net were made from a rope of this length and how wide it would be! And yet, such a vast network of blood vessels is located in your body, and capillaries take blood to every part, without neglecting an area as tiny as the head of a pin.

The well-being of your organs is directly related to us. If our interiors begin to narrow, because of fatty cholesterol plaque for instance, then we begin to lose our flexibility. This means malnutrition for that organ, since a lesser amount of blood than expected can come. If a blood clot sticks to our wall and blocks the blood flow, the relevant organ may be in terrible trouble. If other arteries supply blood to that organ, then it can handle this, but if a main artery is blocked and if secondary channels do not exist or are insufficient, you experience infarction. Taking this into consideration, you need to be careful what you eat and lead a physically active life. When you get old, if sufficient blood does not pass through us in your brain, failures with brain activities appear and you go senile. As the walls of veins and arteries have a rich network of nerves, we let the suitable amount of blood flow according to the need of the organ we’re serving, under the control of the autonomous nervous system. While blood vessels that are connected to an organ not currently requiring much blood contract to reduce the amount supplied, those that are connected to currently more active organs expand. And dear Peter, the greatest blessing here is that none of these activities require any conscious effort from you; everything works smoothly without your even being aware.

This wonderful network of ours finds its value in the vital fluid we carry. If it weren’t for blood, we would have no value at all, and such a perfect means of distribution would be unnecessary. Even the duty of the heart is to make this fluid circulate throughout the body. Now, let us step aside and allow blood to have the floor.

All the organs functioning in your body have a direct or indirect relationship with me. I can be compared to a kind of “chemical brain.” All metabolic activities are among my duties, including the control of excretions, digestion, and the composition of blood. You would be stupefied if I listed every single function I carry out, but let me tell you this much: biochemists have discovered that I am directly included in more than 80 different activities and related to more than 5,000 chemical reactions taking place in your body. Surprised? But this is only what they’ve learned so far; you do not know me in detail yet. My plain appearance is in contrast with my numerous functions. My size is about one-tenth of the body of a six-month-old fetus; now that you have become a young man, I weigh about one fiftieth of your body weight. Since I am the largest excretory organ in your body, I am firmly strapped with mesentery so you can run, jump, and make other movements without trouble.

Most people see me merely as a bile-producing organ, which happens to be among the simplest of my duties. Let me explain it another way: the heat I produce while working is equal to one-third of the heat your body produces while resting. I have a special circulatory system. Since I am located at a “junction,” the blood coming from the intestines which bear nutrient molecules come to my vein first together with the blood from the spleen, before joining the rest of the bloodstream. It can be compared to an obligatory customs check. The amount of blood I supervise within 24 hours is about 2,000 liters. With every heartbeat, almost 28 percent of the blood being pumped passes through me.

I adjust the level of blood sugar in a very sensitive balance. If you eat desserts or pastries I convert excess sugar into glycogen (animal starch) and store it. If your blood sugar decreases from hunger, I break down glycogen into sugar (glucose) and come to your help so that you do not come to a halt, like a car out of fuel.

I use various protein molecules to synthesize numerous enzymes. I also play a role in blood coagulation, red blood cell production, and storing the iron you need. You know, nothing is wasted in the divine system of nature. So how can I waste anything? When the aged red blood cells die, I help the spleen to break them down and store the iron they contain. My job in fat metabolism is no less important. Thanks to the bile I produce, the fatty food you eat is broken down to smaller molecules to be absorbed in a way similar to detergents remove oily remnants from dishes. Naturally, the fat-soluble vitamins (A, D, E, K) are also absorbed along the process. I store the excess of both these vitamins and fats. Fats are an important fuel particularly for your heart muscles. I excrete an average of 600–700 grams of bile a day. Two minutes after oily foods pass to duodenum the walls of my gallbladder are operated. Through contractions of 2–6 times a minute and a pressure of 25–30 mmHg, the bile is passed to duodenum in a time span of 15 to 90 minutes. What gives bile its yellowish-green color is the substance named bilirubin, which appears with the breaking down of the old red blood cells and disposed of through the bowels.

The Kuppffer cells—as you name them—have the duty of checking out newly produced blood cells one by one in addition to producing antibodies against germs. If any ill-formed blood cells come up, I must detect and destroy them. Otherwise they corrupt your blood. Thanks to the Kuppffer cells, the ill-formed blood cells are destroyed as soon as they are detected.

The average longevity of my cells varies between 150-180 days (220 days maximum). New cells are produced immediately to replace the dying ones and the system works smoothly. In each of these cells there are 1,000-3,000 mitochondria and millions of ribosome. An average of 180 new ribosome are produced every second. Although none of my cells have consciousness or intelligence, thousands of them come together to form little lobes resembling hexagons. The number of these lobes varies between 50,000 to 100,000.

Dear Peter, you intake various toxic substances together with the foods you eat. You don’t even realize that food has been corrupted by bacteria and fungi until its taste changes. Frankly, you should not have lived very long with so much toxic intake; Providence has given me an important duty to protect you from such harm. I capture these toxic compounds released into your bloodstream and neutralize them. The same goes for different medicines you take; I try to neutralize their toxic effects as well. But I have my own limits of tolerance; if I am faced with more toxic substances than I can handle, then I give signals of danger. You wonder how. Well, I shout “help” through red spots in your hands and itchy spots on your skin. You should be more careful about what goes down your throat.

Given that I fulfill various important functions, the littlest failure in me reveals itself as a health problem immediately. Hepatitis is among the common diseases heralding my failure. Excessive increase of bilirubin in your blood causes the white of your eye and your skin to turn yellow. I fear viruses most. Particularly hepatitis B and C viruses destroy my tissue. And alcohol, as you know, is my sworn enemy. I have to exert myself to neutralize even a tiny amount of alcohol. And if the hepatitis virus is added, I become knocked down and contract cirrhosis. It does not happen suddenly, though. Along the process which you know as liver failure I give various signals: skin eruption, digestion problems, sleepiness, and headache after meals, and so on. Since these symptoms are not serious problems, most people ignore these signals I give. Due to my various functions, the lab tests about me are more than a hundred.

Talking about my enemies may have upset you a bit, but it’s not all doom and gloom. After all, I am the organ with the highest capacity to renew itself. Sounds good, right? Otherwise I would have been finished off long ago, so this ability is a real blessing. Let me give you an example: although 90 percent of my cells are destroyed during hepatitis, I can help you survive with the remaining 10 percent if you rest well and control what you eat. If you ignore the disease, it might lead you and me to the grave. Do not ever believe those who take this lightly and say: “This doctor says that a small amount of alcohol is good for health.” Tell it to the marines. Those who say that should visit hospitals first. I’m sorry, Peter, but it really gets on my nerves. If they could only appreciate a work of art like me. Anyway, that’s all for now, please take good care of me.

Dear Peter, in your body, which is built like a well-functioning factory, I am the most essential sanitary device. As the heart pumps blood to take food and oxygen to all your organs, you obtain the energy you need. But do you ever think about the disposal after so splendid activities are carried out in your body? If you burn a stove, you need to dispose of the smoke and the ashes if you want to keep it working. Likewise, as you burn your calorie intake, you dispose of the smoke (carbon dioxide) with your lungs and the waste with nitrate-poisonous after a certain level of intensity-thanks to my quietly and perfectly working filters. That is, I am an organ which saves your life by removing the poisonous substances in your blood. I do not only filter your blood, but also play a role at controlling the balances of the sensitive levels of water, sugar, amino acids and different minerals in your body. In short, I am a tiny but strategic laboratory.

The acid-base balance in your body and the amount of water and different salts are significant values which concern all of your bodily activities. When their balance is upset, different troubles arise in different units of your bodily mechanism. I am such a blessing, which works so sensitively to adjust the levels of water and mineral salts in your body while you don’t even realize it.

A watery environment is needed for the thousands of biochemical activities taking place in your body. In addition, activities like the contracting of the muscles and transmission of electrical stimuli between your neurons are realized with the presence of a pinch of mineral salt you don’t even give a thought about. Sometimes you sweat due to running or hot weather. The white stains on your shirt are the salts you lose after the water evaporates. When you suffer from diarrhea, you lose salt again, for the salt in the nutrients are thrown out without being absorbed. Especially when little children are concerned, this loss is of vital importance. The transfer between the blood and the liquid in the tissues is mainly realized through the concentration differences which are kept in a certain balance. If your body holds too much water, your tissues swell. You particularly feel it when you press your finger over the flesh near your shins.

Dear Peter, I will not list all of my duties in detail in order not to confuse you. However, let me tell you one more. Since not everyone knows this duty of mine, they just see me as an organ of liquid disposal. But I also take part in controlling the blood production! Surprised? Well, I also have the duty of secreting the hormone which stimulates blood production in the bones. I must always stay alert and maintain this balance in the best way; if you start losing blood, for instance, I must increase the hormone and accelerate blood production.

Yes Peter, I’ve told you about a few of my basic duties, but haven’t told you about how wonderfully designed I am. I am a bean-shaped organ and a single kidney like me weighs 130-160 grams on average. We are approximately 10 grams lighter in female bodies. I am surrounded by a soft but protective membrane. I need 35 grams of daily oxygen supply to survive and I use 13 % of your total body energy.

As an army is made up of individual soldiers, I am like a complex army, and a single soldier of mine is called a “nephron,” which does the real job. Thus, you can see me as a body of nephrons. Millions of these nephrons are brought together to make up one kidney.

A single nephron is a thin tubular structure with closed ends, and its length is about 3-4 cm. So the total length of my nephrons is about 50 km. The cup-like sac at the beginning of a nephron is named the “Bowman’s capsule.” The main artery bringing blood to the kidneys branch into smaller units, and one road leads to every nephron. The knot of capillaries (glomerulus) inside this double-walled capsule is more complicated than any road map you might have seen. The total length of the capillaries is nearly 25 km. The unwelcome substances in the blood are passed to the capsule thanks to blood pressure, and they proceed through the tubule. The total surface area of my tubules is about 20 m2. Within five minutes the whole of your blood passes through us. That is to say, an average of 1.2 liters of blood per minute, and 1800 liters a day are filtered by my nephrons, leaving the toxic substances in me. As this amount of blood (nearly 400 times the normal amount in your body) pass through my tubules and return to the veins they leave behind an average of 180 liters of liquid in me. In this case, you could be supposed to throw out 180 liters of urine a day. However, if you really did that, you would neither be able to find a sufficient supply of water nor salt. Fortunately, Providence granted you the mechanism to absorb back nearly 178.5 liters of this filtered substance. This way, the thickened urine throws out the toxic nitrogen-containing byproducts together with a little amount of water. Therefore, I give you back the substances you need with an amount of 1.5 liters of liquid disposal a day. This reabsorbing is realized in what you call the Henle loop. The cells in the walls of my tubules have neither intellect, nor consciousness, nor any knowledge of physiology; in spite of this, they work as if they were perfectly aware of their duty to adjust the amounts and types the substances to be kept or released. To give you an idea, you can think about the huge dialysis machines your engineers design to fulfill the job my tiny tubules do. You decide which one of us is the perfect work of engineering.

A rich network of veins surround the Heinle loop and the reabsorbed substances are released into the bloodstream. The drops to be disposed of are collected and then passed to your bladder. When the liquid in your bladder amounts to a certain value it tightens the bladder walls. The muscles blocking the way out give way and the urine is disposed of. However, know that the bladder has the capacity to expand as large as 1.5 liters when you cannot find the proper time and place.

Peter, most people take for granted the blessings they enjoy. If you visit the nephrology service in a hospital and talk to the patients waiting to be dialyzed, you understand what I mean better. Do not forget that many people who suffer from kidney failure need that huge machine to filter the whole of their blood and they pray for a kidney suitable for transplantation to be found at once.

Incidentally, thinking of chronic kidney failure recalled various reasons which ruin me: long lasting infections, long-term use of certain medicine, different chemicals like ethylene and mercury, heavy loss of blood, high blood pressure, serious burns, and wrong blood transfers etc. In such cases I can receive irreparable damage.

Another issue which troubles me is the formation of kidney stones. The stones which form owing to failures in different metabolic processes really hurt. When excessive decrease of liquids or increases of salts in the body upset my sensitive balance, some dissolved substances remain, begin to collect, and form stones. These stones hinder urine flow and might cause infections. You may drink water abundantly to prevent these stones. Most importantly do not wait too much before going to the toilet. If you excuse me, I also strongly recommend you to urinate in sitting position; this helps emptying your bladder completely and reduces the risk of kidney stones.

I do my job properly until I lose 90 % of my working capacity. When a considerable part of me loses its capacity, the remaining good part boosts its activity to make up for the loss. When one of our twins are taken out with an operation, the other one does not complain at all; it grows a bit bigger and keeps working.

As the nature of honey depends on the nectars bees collect, the ingredients of the urine I produce depend on what’s in your body. Therefore, a urine analysis tells much in the case of illness. For example, I normally do not release valuable substances like glucose and protein in your blood into the urine, but return them to the bloodstream. As my friends cannot fulfill this function in diabetic patients, their urine analyses reveal glucose. As for medicines, I throw them out right away since they are alien substances to me.

Peter! You are young and healthy but be careful and do not get cold around the waist, otherwise I might trouble you. There’s a lot to tell you Peter, but I do not want to confuse you. Like any other organ, I do not like being taken for granted and I just wish for you to appreciate what a blessing I am. Let me note that my perfect cooperation with the rest of your body is another wonder in itself. Anyway, the urea in your blood is increasing, so I must go help my twin now. Goodbye Peter!

Irfan Yilmaz is a professor of biology at Dokuz Eylul University, Izmir.